Question

由于某种原因，on bindviewholder不接受Viewholder创建的变量（holder.name和holder.dexription）。我已经尽力修复了所有问题，但没有任何效果。如果可以帮助，请看下面的代码。

public class CityAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {

    private ArrayList<City> cities;
        public CityAdapter(ArrayList<City> cities) {
            this.cities =cities;
        }

    @Override
    public int getItemCount() {
        if (cities != null) {
            return cities.size();
        } else {
            return 0;
        }
    }

    public ViewHolder onCreateViewHolder(@NonNull ViewGroup parent,int viewType){
       View v =(View) LayoutInflater.from(parent.getContext()).inflate(R.layout.items,parent,false);
       return new ViewHolder(v);
    }

    @Override
    public void onBindViewHolder(@NonNull RecyclerView.ViewHolder holder, int position) {
        City city = cities.get(position);

        holder.name.setText(city.getName());
        holder.description.setText(city.getDescription());
    }
    static class ViewHolder extends RecyclerView.ViewHolder {

        public View view;
        public TextView name;
        public TextView description;
        public ImageView image;

        public ViewHolder(@NonNull View itemView) {
            super(itemView);

            this.name=(TextView) itemView.findViewById(R.id.name);
            this.description=(TextView) itemView.findViewById(R.id.description);
            this.image=(ImageView) itemView.findViewById(R.id.image);
        }
    }    
}

Answer 1

您来自错误的班级

更改}


Gson gson = new Gson();
Data data = gson.fromJson(json, Data.class); System.out.println(data.getRegional().get("asia-pacific-east"));

并从以下位置更改“ onBindViewHolder”方法的第一个参数

CityAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder>

到

CityAdapter extends RecyclerView.Adapter<CityAdapter.ViewHolder>

onbindViewHolder不接受视图持有者变量

1 个答案: